北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 1999, Vol. 22 ›› Issue (2): 44-48.

• 研究报告 • 上一篇    下一篇

H.223和H.245的分析和实现

刘勇   

  1. 北京邮电大学培训中心, 北京 100876
  • 收稿日期:1998-07-01 出版日期:1999-03-10
  • 基金资助:
    国家“863计划”资助项目

Analysis and Realization of H.223 and H.245

Liu Yong   

  1. Training Center, Beijing University of Posts and Telecommunications, Beijing 100876
  • Received:1998-07-01 Online:1999-03-10

摘要: 论述了PSTN网上的多媒体通信协议: 数据流复用标准H.223, 通信协议标准H.245, 分析了其主要功能, 并对编程设计的主要问题进行了理论分析,给出了主要功能实现的流程图, 以及编程设计主要问题的解决方法.在PC机上已实现了以上协议, 测试表明, 编写的H.245和H.223软件基本符合协议规定.

关键词: 公众交换电话网, 多媒体通信, 平均等待时间

Abstract: Protocols of H.223 and H.245 for multimedia communications on PSTN are discussed. It analyses the main functions and theoretically the main design problems forthe protocols.The main program flow charters are given, and the methods for design problems are also given. According to the above program flow charters and design methods, we realize the protocols, and verify that the protocols are basically in accordance with ITU-T specifications.

Key words: public switched telephone networks, multimedia communication, mean waiting time

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